Consider this example

There is a Class called Department ( Department has a Set of Sections )

Department has Sections ( Sections has Set of Students )

And Sections has Students. ( Students has properties has name)

Now I want to retrieve a Department where student has a name eg section.student.name = "Sam"


when I retrieve the Department , it should contain Sections which again should contain students with Name as "Sam"

The problem is when I retrieve Department , it retrieves all the sections , even though no student named "Sam" exist in that section.

Can anybody help me in this regard.